Originally Posted by VGeorgie

You can provide the email address for DMCA notices, but the Copyright Office wants more, and this information is not subject to privacy laws.

(A) the name, address, phone number, and electronic mail address of the agent.

(B) other contact information which the Register of Copyrights may deem appropriate.

The operative word in sub-para A is "and." See Section 512(C)(2). Most of these hosts don't have a registered agent, making them ineligible for safe harbor anyway. Not that it matters, as hosts like Oron don't qualify anyway because of 512(C)(1)(b): they directly benefit financially from the infringing activity, and by paying a bounty to the uploader encourage the infringing activity.